package com.itheima.impl;

import com.itheima.service.BookService;
import com.sun.xml.internal.ws.developer.Serialization;
import org.springframework.stereotype.Service;

@Service //表示当前类就是业务逻辑层实现类,被Spring容器管理
public class BookServiceImpl implements BookService {

    @Override
    public void getById(Integer id) {
        System.out.println("你查询的用户信息是:" + id);
    }
}
